Digi 9P 9360/9750 manual Boot, Kernel, Root File System

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A d v a n c e d T o p i c s

For modules with NOR flash, use this command:

#cp.b <start address in RAM> <start address in Flash> <image size>

ConnectCore 9P 9360/9750

The following commands are to update the U-Boot loader, Kernel image, and Root file system.

U-Boot

To update the U-Boot boot loader, type: mw.l 100000 ffffffff 10000 tftp 100000 <u-boot_image> nand erase 0 40000

nand write.jffs2 100000 0 u-boot_image_size reset

Kernel

To update the Linux kernel image, type:

tftp 100000 <kernel_image> nand erase 40000 2C0000

nand write.jffs2 100000 40000 kernel_image_size

Root File System

To update the root file system, type:

tftp 100000 <rootfs_image>

nand erase 300000 (Size of flash – 3MB)

nand write.jffs2 100000 300000 rootfs_image_size

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Contents LxNETES User’s Guide ConnectCore 9P 9360/9750 Page Page Page Contents Building the First Project Interfaces & Devices Appendix B Cross-development environment IntroductionOverview Example applications Linux kernel sourcesTemplate project What’s new in LxNETES 3.2? FeaturesGeneral features RTC Gpio This is a tip. It contains useful information about a topic Conventions used in this manualAcronyms and abbreviations System requirements RequirementsSystem Requirements/Prerequisites Optional but recommended components Disk spaceTftp daemon Applications & ServicesNFS server JTAG-Booster N E T E S U s e r ’ s G u i d e Introduction Connecting host PC with development boardGetting Started Seyon MinicomSeyon Settings Connect powerTest Ethernet configuration # ifconfig eth0 Installing LxNETESGuided Installation Manual Installation N u a l Installation Building the First Project Building the Default ProjectRun configure Run make Run make installAdding your own applications Application DevelopmentWriting applications Display Using C++Included example applications Proc/cpuinfo contents Debugging applications Choose the right architecture for your target Shell applications busybox Included pre-built applicationsTelnet daemon utelnetd Web server BoaEmbedded Qt Nano-X/microwindowsMem Useful applicationsKernel Development What is a kernel module?Writing kernel modules Writing your own kernel modulesIncluded Kernel modules Minimal Add the module to the build environmentBuilding and loading of kernel modules Advanced Topics Modifying the default projectD i f y i n g t h e d e Fault p r o j e c t Building a custom project Introduction Boot processBoot Bank # 0 00000000 32 MB ConnectCore 9P 9360/9750NAND-Flash Linux boot methodsUSB NOR FlashMMU Linux boot processV a n c e d T o p i c s Updating the Flash memory Passing arguments to the kernelAutomating the image download Updating a running system manually Updating a running system the easy wayWrite the image to Flash Download the new image file to RAMErase the Flash partition Root File System BootKernel Updating a corrupted system using a debugger Root File System Types Launch the kernel from RAM Set bootargs to be passed to the kernelDownload the kernel to RAM via Tftp JFFS2 Copy the kernel to RAM O t F i l e S y s t e m T y p e s N E T E S U s e r ’ s G u i d e Serial interface Interfaces & DevicesI2C interface USB host interfaceSPI interface LCD interfaceCompact flash interface How to set the initial system date and timeSD card interface Real time clock RTCPCI interface Related documentation CD contentsAppendix a Readme.txt Install.shRelNotes.txt Docs ImagesConnectCore 9P 9360 CC9P9360 SetupConnectCore 9P 9750 CC9P9750 HardwareFlash memory layout Memory layoutsConnectCore 9P 9360 / ConnectCore 9P Sdram memory layoutTextbase N E T E S U s e r ’ s G u i d e Appendix B Boot command referenceO o t c o m m a n d r e f e r e n c e Skipped CC9C CCXP270 UNC90 Example A9M24x0 User keys